Conservation on your own : how to lay out contour lines and use field borders.

Bibliographic Details
Corporate Author: United States. Soil Conservation Service
Format: Government Document Book
Language:English
Published: St. Paul, Minn. : USDA Soil Conservation Service, [1990]
Subjects:
Description
Item Description:Caption title.
Shipping list number: 90-0316-P.
At head of title: "How to."
Physical Description:2 unnumbered pages ; 22 x 10 cm.